CN109721994B - High-gloss scratch-resistant polycarbonate and preparation method and application thereof - Google Patents
High-gloss scratch-resistant polycarbonate and preparation method and application thereof Download PDFInfo
- Publication number
- CN109721994B CN109721994B CN201811604145.7A CN201811604145A CN109721994B CN 109721994 B CN109721994 B CN 109721994B CN 201811604145 A CN201811604145 A CN 201811604145A CN 109721994 B CN109721994 B CN 109721994B
- Authority
- CN
- China
- Prior art keywords
- parts
- resistant polycarbonate
- resin
- gloss scratch
- antioxidant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides high-gloss scratch-resistant polycarbonate and a preparation method and application thereof, belonging to the technical field of new materials, wherein the high-gloss scratch-resistant polycarbonate comprises the following components in parts by weight: 63.4-73.5 parts of PC resin; 5-7 parts of MBS resin; 20-25 parts of an anti-scratching agent; 1-3 parts of silicone powder; 0.2-0.6 part of antioxidant; 0.3-1 part of lubricant. The high-gloss scratch-resistant PC material provided by the invention improves the scratch resistance, simultaneously considers important performances such as glossiness and impact strength, has good and balanced mechanical, thermal and electrical properties as the base material PC, and has lower melt viscosity and easier processing. The preparation method of the high-gloss scratch-resistant PC is simple in preparation, strong in operability and easy to implement, can realize large-scale industrial production by means of the conventional mature-technology double-screw extruder, and has a very wide application prospect in the field of spraying-free.
Description
Technical Field
The invention relates to the technical field of materials, in particular to high-gloss scratch-resistant polycarbonate and a preparation method and application thereof.
Background
Polycarbonate (PC) has been widely used due to its excellent mechanical properties, thermal stability, dimensional stability and surface gloss, and has been developed as one of the most important engineering plastics. At present, the advantages of environmental protection, cost reduction and the like of the plastic spraying-free PC are one of the development trends of the plastic industry, the spraying-free PC is also applied in the plastic spraying-free PC, and the application of the PC in the field is limited due to the poor scratch resistance of the surface. The general methods for increasing the surface hardness include modification, blending, coating and the like, wherein the filling modification is simpler and more economical. However, at present, the research on the direction is relatively little, and the important performances such as glossiness and impact strength are easily influenced, so that the requirement of spraying-free plastics cannot be met.
Disclosure of Invention
In order to solve the problems mentioned in the background technology, the invention provides a high-gloss scratch-resistant polycarbonate which comprises the following components in parts by weight:
further, the components according to the weight ratio comprise:
further, the PC resin has a melt index of 3-15 g/min.
Furthermore, the MBS resin is not sensitive to shearing, is suitable for toughening PC and has small influence on other properties.
Further, the scratch resistant agent is a low molecular weight acrylic special polymer, and can improve the surface hardness of PC without influencing the glossiness and transparency of the PC.
Further, the silicone powder is white powder in appearance, and the average particle size is less than 5 mu m.
Further, the antioxidant is compounded by hindered phenol antioxidant 1076 (beta- [3, 5-di-tert-butyl-4-hydroxyphenyl ] n-octadecyl propionate) and phosphite antioxidant 168 (tris [2, 4-di-tert-butylphenyl ] phosphite) in a ratio of 1: 1.
Further, the lubricant is pentaerythritol tetrastearate (PETS).
The invention also provides a preparation method of the high-gloss scratch-resistant polycarbonate, which comprises the following steps:
adding PC resin, MBS resin, an anti-scratch agent, silicone powder, an antioxidant and a lubricant in a certain weight ratio into a mixer to mix for 5-10min to obtain a premixed material;
and secondly, adding the premixed material into a double-screw extruder through a main feeding port, performing melt extrusion through the double-screw extruder, performing water-cooling bracing and granulating, and performing screening dehydration to obtain the high-gloss scratch-resistant Polycarbonate (PC).
The invention also comprises the application of the high-gloss scratch-resistant polycarbonate in the aspect of spray-free products.
Compared with the prior art, the invention has the following characteristics:
(1) the scratch resistance agent added in the invention is a low molecular weight acrylic special polymer, and the surface hardness of Polycarbonate (PC) is improved by adding the low molecular weight acrylic special polymer, because the hard low molecular weight acrylic special polymer is easy to cover the surface of plastic to form a scratch resistance layer in the processing process, thereby achieving the purpose of scratch resistance. Meanwhile, due to the existence of the low molecular weight acrylic polymer, the melt viscosity is reduced, and the processing is simpler.
(2) The invention also finds that although the scratch resistance effect of the base material can be improved by adding the scratch resistance agent, the impact strength of the base material is reduced along with the increase of the addition amount of the scratch resistance agent, if MBS resin is added for toughening, on one hand, the impact strength is considerable by adding a large amount of MBS resin, and on the other hand, the highlight property of the material is damaged by adding a large amount of MBS resin, so that the spraying-free effect cannot be achieved. For this reason, the present inventors have found that the addition of a specific amount of silicone powder not only helps to modify the crystallization of the material, increase the impact strength, improve the flowability and releasability of the plastic, but also improves the surface gloss of the material, and that the addition of silicone powder can reduce the amount of the scratch resistance agent and ensure good scratch resistance of the surface of the material. However, the addition of excessive silicone powder no longer increases the scratch resistance of the surface, and also affects the mechanical properties and the glossiness.
In conclusion, the polycarbonate modified material with high gloss and good scratch resistance can be obtained only under the synergistic effect of the scratch resistance agent with specific addition amount, the MBS resin and the silicone powder, the scratch resistance performance of the material is improved, the important performances such as gloss, impact strength and the like are considered, the polycarbonate modified material has good and balanced mechanical, thermal and electrical performances as the base material PC, the melt viscosity is lower, and the processing is easier. The preparation method of the high-gloss scratch-resistant PC is simple in preparation, strong in operability and easy to implement, can realize large-scale industrial production by means of the conventional mature-technology double-screw extruder, and has a very wide application prospect in the field of spraying-free.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the reagents or apparatuses used in the examples are not indicated by the manufacturer, but those not indicated by the specific techniques or conditions described in the literature in the art or by the specifications of the products are all conventional products commercially available.
Some of the raw materials used in the examples and comparative examples of the present invention are illustrated below:
PC resin Dafeng chemical industry 02-10L
MBS resin LGEM 505
Anti-scratching agent Mitsubishi H-880
Silicone powder GM-100A
Antioxidant: antioxidant 1076 and antioxidant 168
Lubricant: PETS
Examples 1-5 are provided to illustrate the present invention, and the formulation of each component of examples 1-5 is shown in table 1 (the components are in parts by weight):
TABLE 1
In order to prove the coordination effect among the components provided by the invention through comparison, the invention also provides comparative examples 1-5 (the components are mixed according to the parts by weight) shown in the table 2:
TABLE 2
The following are the preparation methods of the above examples and comparative examples (the components of each example are weighed according to the weight part ratios of tables 1 and 2):
firstly, placing PC resin in a drying box, drying for 3h at 120 ℃, then adding the dried PC resin, MBS resin, an anti-scratch agent, silicone powder, an antioxidant and a lubricant into a high-speed mixer to mix for 5min, wherein the rotating speed of the mixer is 300r/min, and uniformly mixing in a mixer to obtain a premixed material;
and secondly, adding the premixed material into a double-screw extruder from a main feeding port, performing melt extrusion through the double-screw extruder, performing water-cooling bracing and granulating on the extruded material, and performing screening and dehydration to obtain the polycarbonate modified material. Specifically, the length-diameter ratio of a screw of the double-screw extruder is 40:1, the rotating speed of a main machine is 300r/min, the temperature of each reaction section from a feeding section to a machine head in the double-screw extruder is 230 ℃, 240 ℃, 250 ℃, 260 ℃ and the die head temperature is 250 ℃.
The polycarbonate modified materials prepared in examples and comparative examples were injection molded at 230 ℃ to 260 ℃ and a pressure of not more than 80MPa injection molding temperature to obtain test specimens, and the relevant performance tests and test methods of the test specimens are shown in tables 3 and 4.
TABLE 3
TABLE 4
As can be seen from tables 3 and 4, the polycarbonate modified materials prepared in examples 1-5 all have a gloss of more than 100 and a pencil hardness test rating of more than H, which proves that the polycarbonate provided by the invention has high gloss and scratch resistance; from the comparison between comparative examples 1 to 4, it was found that, when the MBS resin and the silicone powder were not added, the gloss and pencil hardness test grade of the polycarbonate material increased with the increase in the proportion of the addition amount of the scratch resistance agent, while the impact strength decreased; comparative example 5 requires 10 parts of MBS resin to give a considerable impact strength, however, the gloss is impaired by the addition of MBS resin;
comparing examples 1 to 5 with comparative example 5, it was found that the addition of the silicone powder can avoid the loss of gloss and reduce the amount of the scratch resistance agent added while ensuring the scratch resistance.
The above experimental data show that: the polycarbonate modified material with high gloss and good scratch resistance can be obtained only under the synergistic effect of the scratch resistance agent with specific addition amount, the MBS resin and the silicone powder, and the material improves the scratch resistance and also has important properties such as glossiness, impact strength and the like.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The high-gloss scratch-resistant polycarbonate is characterized by comprising the following components in parts by weight:
63.4-73.5 parts of PC resin
MBS resin 5-7 parts
20-25 parts of anti-scratching agent
1-3 parts of silicone powder
0.2 to 0.6 portion of antioxidant
0.3 to 1 portion of lubricant
The anti-scratching agent is Mitsubishi H-880.
2. The high gloss scratch resistant polycarbonate of claim 1, wherein the ingredients in weight proportions comprise:
66.8 parts of PC resin
MBS resin 6.5 parts
Anti-scratching agent 25 parts
1 part of silicone powder
0.2 portion of antioxidant
0.5 part of lubricant.
3. The high gloss scratch resistant polycarbonate of claim 1 or 2, wherein: the melt index of the PC resin is 3-15 g/min.
4. The high gloss scratch resistant polycarbonate of claim 1 or 2, wherein: the MBS resin is not sensitive to shearing.
5. The high gloss scratch resistant polycarbonate of claim 1 or 2, wherein: the silicone powder is white powder in appearance, and the average particle size is less than 5 mu m.
6. The high gloss scratch resistant polycarbonate of claim 1 or 2, wherein: the antioxidant is compounded by hindered phenol antioxidant 1076 and phosphite antioxidant 168 in a ratio of 1: 1.
7. The high gloss scratch resistant polycarbonate of claim 1 or 2, wherein: the lubricant is pentaerythritol tetrastearate.
8. A process for the preparation of the high gloss scratch resistant polycarbonate of claim 1 or 2, comprising the steps of:
adding PC resin, MBS resin, an anti-scratch agent, silicone powder, an antioxidant and a lubricant in a certain weight ratio into a mixer to mix for 5-10min to obtain a premixed material;
and secondly, adding the premixed material into a double-screw extruder through a main feeding port, performing melt extrusion through the double-screw extruder, performing water-cooling bracing and granulating, and performing screening dehydration to obtain the high-gloss scratch-resistant polycarbonate.
9. Use of the high gloss scratch resistant polycarbonate of any of claims 1 or 2 in a spray free product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604145.7A CN109721994B (en) | 2018-12-26 | 2018-12-26 | High-gloss scratch-resistant polycarbonate and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604145.7A CN109721994B (en) | 2018-12-26 | 2018-12-26 | High-gloss scratch-resistant polycarbonate and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109721994A CN109721994A (en) | 2019-05-07 |
| CN109721994B true CN109721994B (en) | 2021-03-26 |
Family
ID=66297757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811604145.7A Active CN109721994B (en) | 2018-12-26 | 2018-12-26 | High-gloss scratch-resistant polycarbonate and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109721994B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104629296A (en) * | 2013-11-06 | 2015-05-20 | 殷培花 | Low-warp high impact resistance flame retardant modified PC / ABS alloy |
| US20150232661A1 (en) * | 2014-02-20 | 2015-08-20 | Sabic Innovative Plastics Ip B.V. | Thermoplastic composition and article |
| CN105885379B (en) * | 2016-06-13 | 2018-06-22 | 上海锦湖日丽塑料有限公司 | Scratch-resistant bloom is exempted to spray PC/ASA alloy materials and preparation method thereof |
-
2018
- 2018-12-26 CN CN201811604145.7A patent/CN109721994B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109721994A (en) | 2019-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103554865B (en) | A kind of high flowing PC/ABS alloy material and its preparation method and application | |
| CN105175924A (en) | Antistatic master batch, PC alloy with the same and preparing method of PC alloy | |
| CN103232701A (en) | Scratch-resisting highlight PC/ABS (Poly Carbonate/Acrylonitrile Butadiene Styrene) composition and preparation method thereof | |
| CN102863753B (en) | Matte PCABS (polycarbonate acrylonitrile butadiene styrene) composite material and preparation method thereof | |
| CN104448760B (en) | Scratch-resistant height light PC/ABS material and preparation method thereof | |
| CN104559108A (en) | Spray-free PC/ABS composite material with high gloss and high impact resistance and preparation method of spray-free PC/ABS composite material | |
| CN112048124A (en) | Glass fiber reinforced polypropylene material with low-floating-fiber surface and preparation method thereof | |
| CN104194300A (en) | Anti-aging antimicrobial PC/ABS (polycarbonate/acrylonitrile-butadiene-styrene) blend alloy and preparation method thereof | |
| CN111117262B (en) | Scratch-resistant agent for highlight spraying-free PC/ABS alloy and preparation method thereof | |
| WO2019233791A1 (en) | Method for the manufacture of a colored polymer composition | |
| CN101735549A (en) | PMMA/ABS (polymethyl methacrylate/acrylonitrile butadiene styrene) composite material and manufacturing method | |
| CN111440409A (en) | Spraying-free plastic and preparation method thereof | |
| CN112442251B (en) | ABS composite material and preparation method and application thereof | |
| CN109721994B (en) | High-gloss scratch-resistant polycarbonate and preparation method and application thereof | |
| CN109320935B (en) | Production process for improving polycarbonate alloy material color powder point | |
| CN112457602B (en) | Super-black high-gloss scratch-resistant ABS (acrylonitrile butadiene styrene) composite as well as preparation method and application thereof | |
| CN109233135B (en) | Polyvinyl chloride material and preparation method thereof | |
| CN114163797A (en) | Yellow polycarbonate/styrene resin alloy composition and preparation method and application thereof | |
| CN114213778A (en) | High-impact high-gloss HIPS material and preparation method and application thereof | |
| CN112552638A (en) | White ABS composite material with transmittance and preparation method thereof | |
| CN103044851B (en) | High-gloss ABS (acrylonitrile-butadiene-styrene) alloy and method for preparing same from matte ABS | |
| CN111019214A (en) | Polyethylene multifunctional smooth master batch and preparation method thereof | |
| CN109721967A (en) | A kind of polyester material bright in luster and preparation method thereof | |
| CN108559219A (en) | A kind of high intensity antibiotic plastic minaudiere | |
| CN109929187B (en) | Special master batch for HIPS (high impact polystyrene) plate for refrigerator liner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |